Hi, This series adds devlink per-port resource support. See detailed description by Or below [1].
Regards, Tariq [1] Currently, devlink resources are only available at the device level. However, some resources are inherently per-port, such as the maximum number of subfunctions (SFs) that can be created on a specific PF port. This limitation prevents user space from obtaining accurate per-port capacity information. This series adds infrastructure for per-port resources in devlink core and implements it in the mlx5 driver to expose the max_SFs resource on PF devlink ports. Patch #1 refactors resource functions to be generic Patch #2 adds port-level resource registration functions Patch #3 adds port resource netlink command Patch #4 registers SF resource on PF port representor in mlx5 Patch #5 adds port resource registration to netdevsim for testing Patch #6 adds selftest for devlink port resources Patch #7 adds documentation for port-level resources With this series (and upcoming userspace patches), users can query per-port resources: $ devlink port resource show pci/0000:03:00.0/196608 pci/0000:03:00.0/196608: name max_SFs size 20 unit entry $ devlink port resource show pci/0000:03:00.0/196608: name max_SFs size 20 unit entry pci/0000:03:00.1/262144: name max_SFs size 20 unit entry Userspace patches for iproute2: https://github.com/ohartoov/iproute2/tree/port_resource V2: - Skip selftest on old userspace that doesn't have the devlink port resource command. - Add link to the userspace patch. - Rename internal helper functions to follow kernel __ prefix convention. - Split first patch into three logical commits. - Change names with "res" to "resource". - Change netdevsim test resource to be generic and not with max_sfs. - Change "max_sfs" to "max_SFs" in documentation file. - V1 link: https://lore.kernel.org/all/[email protected]/ Or Har-Toov (7): devlink: Refactor resource functions to be generic devlink: Add port-level resource registration infrastructure devlink: Add port resource netlink command net/mlx5: Register SF resource on PF port representor netdevsim: Add devlink port resource registration selftest: netdevsim: Add devlink port resource test devlink: Document port-level resources Documentation/netlink/specs/devlink.yaml | 23 ++ .../networking/devlink/devlink-resource.rst | 36 +++ .../net/ethernet/mellanox/mlx5/core/devlink.h | 4 + .../mellanox/mlx5/core/esw/devlink_port.c | 37 +++ drivers/net/netdevsim/dev.c | 23 +- drivers/net/netdevsim/netdevsim.h | 4 + include/net/devlink.h | 8 + include/uapi/linux/devlink.h | 3 + net/devlink/netlink.c | 2 +- net/devlink/netlink_gen.c | 32 +- net/devlink/netlink_gen.h | 6 +- net/devlink/port.c | 3 + net/devlink/resource.c | 281 ++++++++++++++---- .../drivers/net/netdevsim/devlink.sh | 37 ++- 14 files changed, 441 insertions(+), 58 deletions(-) base-commit: 021718d2cc1a2df2f53b06968fa89280199371bd -- 2.44.0
